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Dans RV8
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Date: 12-1-2013
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Number of Hours: 0.10
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Manual Reference:
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Brief Description: Learning 3D CAD, 3D Printing
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I spent the weekend working on skills.
I had wanted to practice welding. The TIG welder arrived almost two weeks ago, but the accessories are slowing coming in.
Wednesday, I had a window to play. I quickly found out that the gas flow regulator was missing a key part. So, Wait till Friday and buy something at Harbor Freight. I got the regulator, but it doesn't work with my hose... So order a new part for Monday.
My brother, Gary, came up. I'd hoped to have him teach me and review some welds. Without a welder, we could just talk. I think I learned a lot from him, but I am sure I will have lots more questions when I get to actually melting steel.
I spent Sunday playing with the 3D printer. I drafted up a lens for the kitchen range. The part has been missing for a while. (Figure 2). This part is about 5/16th at the base. Quite small.
I learned a lot about 3D printing - mostly what I don't know. The face came out great. I used translucent plastic. Tests showed that LEDs show through well. But the legs were a problem. The first version didn't have the slots to allow compression past the interference points. I am not sure I need them. But the result was that they are very narrow. They collapse under their own weight.
I learned a couple fixes. One is to slow down the printing process -By increasing the time for each layer, the plastic has time to cool a bit. I tried simply reducing the feed rate. That didn't do it. Extruding at a lower temperature worked a little better. The fix seems to be to get into the low level configuration and set pass delays. I didn't try that yet.
I also found some cool filler material that is degradable in water. The idea is to make the model solid - put filler around the little parts, preventing them from collapsing. Then, after printing, etch away the filler with water. This looks like a viable plan if process speeds don't solve the issue.
I don't really need to get this to work, but it is a good little experiment to learn the technol
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Sample 3D Printing
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Range Lens
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